By Greeff, Francois
By Eggheads
By Robbins, Joyce
By Phillips, Louis, Farris, Joseph, Shechter, Stan
By Moore, Edwin
By The Week
By Ripley
By Tbc, Author Name, Author Name Tbc
By Dee Gordon
By Caroline Taggart, Taggart, Caroline
By Brocklehurst, Helen
By Bailie, J.M.
By Skinner, Kevin
By Furtado, Peter
By Russell, Ken, Carter, Philip J.
By LORENTZ
By N.E.Thing Enterprises
By Saunders, Eric
By Moore, Dr Gareth
By Victor Serebriakoff (Honorary President of World MENSA)
By Archimedes' Laboratory
By Lucas, Matt
By Ordnance Survey, Moore, Dr Gareth
By Edward de Bono
By Cameron, Joe
By Griffiths, John